Yamaha YSP-1 Service Manual page 53

A B C
SCHEMATIC DIAGRAM (INPUT)
1
14.1
L 7.8 7.8 7.8 2
8
7.8 7.8 1 15 7.9 5
7.8
8.4
8.4 6
VCR 7.9
R 10.4 10.4
2
AUDIO
INPUT
7.8 7.8 5
4
7.8 3 7.8 3
L
8.4 7.8
8.4
2
8.4 4
7.8
TV
0
10.4 10.4
R
SUBWOOFER SUBWOOFER OUT
OUT
3
VIDEO
OUT
5.0
2.7 14
3.2 10
DVD
9 8 5 6 0.4
0
4 DIGITAL DIGITAL IN
INPUT
4.3
TV
0
5.0
OPTICAL
4.1
0
AUX 5.0 15 14 2
1
11 10 4
3
5
RS-232C
SYSTEM
10.6 15.0
CONNECTOR
11.2
11.2
0.1
0.1
11.2 3.1
0
0
0
6
-18.0
7
-22.4 -20.9
-17.7 -24.0
-19.3 -17.6
-20.8 -17.7
-20.8 -17.7
-20.8 -17.7
-20.8 -17.7
-20.8 -17.8
-20.8 3.2
-20.8 1.5
3.2 3.2 3.2 -20.8 FL DRIVER
1.5
0
-20.9
-22.5 3.2
3.2
8 -22.4 -22.4
3.2
-22.5
-22.4 3.2
-22.5
-22.5
-22.4
9
IC40: BP5319F IC39: TC74HCT08AF
DC / DC converter for LCDs Quad 2-Input And Gate
1A 1 14
1B 2 13
1Y 3 12
2A 4 11
2B 5 10
2Y 6 9
GND 7 8
1 2 3 4 5 6 7 8 9
10
CO VOUT VREF GND NC NC GND VCTL VIN
D E F
7
7.9
1
7.8
ANALOG IN
2.6
1.9 1.9
0
5.0
A-3
14
12
11 0
0
13
1
3 0
0
2
5
6 0
0
11
9
OSD 8 3.2
5.0
10
7
3.4
-5.5
-24.4
3.2 3.2 3.2 -19.3
-17.8 13.7
5.7
-17.7 -24.0
-17.7
-17.7 -23.9 5.9
5.9
5.3
0.3
5.7
0
0
3.2 3.2
-20.9
-17.7
-17.7 -20.8
3.3
3.3
INPUT(3)
IC27: µPC4570G2 IC26: TC4053BF
Dual OP-Amp TRIPLE 2-CHANNEL MULTIPLEXER/DEMULTIPLEXER
VDD
Vcc 16
OUT 1 1 8 +V CC
4B
–IN 2 7 OUT
4A 1 2
+ – + –
4Y
3
+IN 1 6 –IN 2 A
11
3B
–V CC 4 5 +IN 2
3A
3Y
B
10
C
9
INH
6
8
VSS
G H
INPUT(1) INPUT(5)
0 2.9
7.0 4.0 0.8
4.0
0 0.8
0
1.1
14.9 3.3
4.0
4.0 0
0
3.3
7.0
3.4
14.9
3.4
3.4
3.4 14.9
0 3.4 14.9
14.9
0
-24.3 0 0 5.0
-24.3
5.0 15.0
5.0
15.0
0
0 0
15.0 15.0
5.0 5.0
2
B-1
3.3 3.3
0 0
0 0
3.4 3.4
3.2 4.0
3.2 3.2
1
3.2 3.2
3.2 4.0 4.0 9.0
3.3 3.3
0
3.1 3.1
13.3 13.3
12.6
12.7
3.2
0.1
0 6.3
6.7
0.1
0.8
0 6.3
0
0
0
0
Page 52 H1
to DSP_CB303
INPUT(2)
Page 52 B1
to DSP_CB300
INPUT(4)
X-COMMON
14
POINT A-3 pin 3 of IC3
OUT c IN 0X
12
OUT c IN 1X
13
OUT c IN 0Y
2
OUT c IN 1Y
1
OUT c IN 0Z
5
OUT c IN 1Z
3
Z-COMMON
4
Y-COMMON
15
7
VEE
I J K
IC1: M66003-0101FP
FL Display Driver
Serial
CS 2 data
SCK 3 receive
circuit
SDATA 4
XIN 7 Clock
generator
XOUT 6
RESET
1
Vcc1 8
Vcc2 18
Vss 5
Vp 64
CHARA
13.4 4.1
AC 8.2
13.4
4.1 OSCIN
9.0
OSCOUT
4.0 3.9
SYNIN
0
SEPOUT
SEPIN
CTRL3
1A
1Y
2A
2Y
3A
3Y
GND
Page 52 G1 Page 54 K3 Page 54 K3
to DSP_CB302 to AMP_CB7 to AMP_CB7
POINT B-1
Q14(E)
Q13(C)
AC cable ON AC cable OFF AC cable ON
L M N
YSP-1
IC2: MAX3232CDWR
On Screen Display Controller
Display code
C1+ 1 16 VCC
RAM CGROM
44 SEG00
(8-bit x 60) (35 bit x 166)
V+ 2 15 GND
Segment 19 SEG25
Code
output
write 17 SEG26
circuit C1 3 14 DOUT1
CGROM
dot data 9 SEG34
(35 bit x 16)
write 4 13
C2+ RIN1
Code/
command
45 SEG35 C2 5 12 ROUT1
control
circuit
DIG11/
52
SEG42 V 6 11 DIN1
DIG12/
51
SEG41 7 10
DOUT2 DIN2
code Segment DIG13/
50
select SEG40
digit 8 9
RIN2 ROUT2
select/ DIG14/
49
output SEG39
timing Display
clock controller scan pulse circuit DIG15/
48
SEG38
DIG16/
47
SEG37
DIG17/
46
SEG36
63 DIG00
Digit
output
circuit
53 DIG10
IC3: LC74781-9798
On Screen Display Controller
CS 9
8-bits
Serial
latch
SIN 11
+
parallel
command
converter Horizontal Vertical Horizontal Vertical Blinking RAM
SCLK 10 decoder
Display write
character character display display and inversion
control
size size position position control address
register counter
register register register register register
RST 23
Blinking
Horizontal Vertical Horizontal Vertical
and inversion Display
VDD1 24 size size dot dot
control RAM
counter counter counter counter
circuit
VSS1 1
VDD2
12 Blinking Blinking
and inversion and inversion
control control
8 register register
Character Line
Decoder
control control
counter counter
Horizontal
character
Font
size
Horizontal
RAM
6 register
character
size
7
register Shift
Character output control
Synchronisation register
Timing generator
Background control
17 signal generator
Horizontal Horizontal Video output control
character
SEPC character
18
size size
register
19 register
20
22
4 21 2 3 5 15 13
CTRL1 CTRL2 XtalIN XtalOUT BLANK CVIN CVOUT
IC4: TC74HCU04AF IC6: NJM79M05FA
Hex Inverters Voltage Regulator
COMMON
1 14 VCC
2 13 6A
3 12 6Y
OUTPUT
4 11 5A
5 10 5Y
6 9 4A
INPUT
7 8 4Y
IC5: AN77L04
Low Dropout Voltage Regulator
Input Short Circuit
Protection
Over Current
Protection
Error Amp.
Rush Current
+ Protection
-
Thermal
Protection
1 3 2
IN GND OUT
IC7: MD3221N
Voltage Regulator
★ All voltages are measured with a 10MΩ/V DC electronic volt meter.
★ Components having special characteristics are marked s and must be replaced
with parts having specifications equal to those originally installed.
★ Schematic diagram is subject to change without notice.
53